I find a question. when I try to change the power for computer's USB interface to an extern 5V.it doesn't work.LD1 keep flashing.but when I use the computer's USB.it works well.what's wrong. I use it to produce a pwm.
As long as the electricity from the computer USB interface can work, whether it is connected to Mini USB or plugged directly into 5V pin through DuPont line, but if the data line is pulled out and inserted elsewhere, such as 5V voltage regulator modu...
I don't mean the power supply interface, does F429disci have any requirements for power supply, such as low ripple coefficient, the voltage of ordinary voltage regulator module can't let him work normally, and the program will run away?
how to provide the F4DISCI a properly extern power. I have applied such as 7805.Lm317.ams1117-5.lm2596s.but the pwm it produced is not what I want. only when I change the power from these modules to the computer's USB to the F4disci 's 5V pin. can i...
